[Nhcoll-l] [EXTERN] Removing specimens from formaldehyde

[Dirk Neumann]

Dear Vanessa,

rising and staging times depends on the size of the specimens and how readily superfluous the formaldehydes is diluted from them. The specimens shown may require 2-3 days of rinsing, and then slowly going up 20/40/60/70. Each of these steps may take 1 week or longer, it depends how much formaldehyde comes out of them.

All together you should assume at least a month, but it can take you longer.

With all best wishes
Dirk


Am 30.09.2024 um 17:14 schrieb Vanessa Pitusi:
Dear all,

Recently, I have discovered that most of our larger specimens kept in the large collection jars, are kept in formalin (photo for reference).

I have looked into removing the specimens from formalin and placing them into ethanol. I understand the steps that have to be taken, but I was wondering if anyone has advice on the soaking time for each step. That is the only thing that is kept vague in the texts that I have read. One reference mentioned that tortoises and racoons take two to three days.

Most the specimens that I will work with a large fish, cephlapods, and birds.

In case any of you have done this, any advice on this or the process is appreciated!

I am also open to having a quick chat via Teams or Zoom.

Kind regards,
Vanessa



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Dirk Neumann
Collection Manager, Hamburg

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--
Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany

Stiftung des öffentlichen Rechts;
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)
Sitz der Stiftung: Adenauerallee 160 in Bonn
Vorsitzender des Stiftungsrates: Dr. Michael Wappelhorst
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